80437960

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2017}}^1$

素因数の和:3025

約数の個数: 32

約数和(自身を含む): 181256760

約数和(自身を除く): 100818800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2017, 3988, 4034, 4985, 7976, 8068, 9970, 10085, 16136, 19940, 20170, 39880, 40340, 80680, 2010949, 4021898, 8043796, 10054745, 16087592, 20109490, 40218980, 80437960]

約数ペア:

[(1, 80437960), (2, 40218980), (4, 20109490), (5, 16087592), (8, 10054745), (10, 8043796), (20, 4021898), (40, 2010949), (997, 80680), (1994, 40340), (2017, 39880), (3988, 20170), (4034, 19940), (4985, 16136), (7976, 10085), (8068, 9970)]